Percussive firing mechanism of ordnance.



A. T. DAWSON AND G. T. BUCKHAM.

PERCUSSIVE FIRING MECHANISM OF ORDNANCE.

APPLICATION FILED JULY 14. 1915.

1502529. Patented May 6,1919.

figs.

a r 3y 1 T STATESPATENT OFFIC.

'AETHUET EvoE DAWSON AND GEORGE THOMAS BUGKHAM, OF WESTMINSTER, LONDON, ENGLAND, ASSIGNOR-S TO VICKERS LIMITED, OF WESTMINSTER,

j oNDoN, ENGLAND.

Specification of Letters Patent.

PEBGUSSIVE FIRING MECHANISM OF ORDNANGE.

Patented May 6, 1919.

, Original application filed April 16, 1915, Serial No. 21,933. Divided and this application filed July 14, 1915.

Serial No. 39,924.

1 ,TO all whom/2'15 may concern:

'Beit known that we, Sir ARTHUR TREvoR Britain, residing at VickersHouse, Broadway, Westminster, in the county of London. .England, have invented certain new and useful Improvements in or Relating to the xPercussive Firing Mechanism of Ordnance,

. of which the following is a specification.

.. This application is a division of our copending application Serial No. 21933, filed 'April 16,,1915.

This invention relates to percussive firing fmechanism of the kind in which the cradle carries a firing shaft adapted to be actuated through the intermediary of a pivoted mem- ,ber. from a trigger or firing handle mounted on or carried by a member pivoted on the ,gun carriage in a position which is some distance removed from the axis of the gun trunnions,and the chief object of the present invention is-to provide improved means for'actuating a rotary firing shaft without 7 -its being necessary to make the said shaft telescopic or provide it with universal joints.

'In orderthat the said invention may be ,qclea'rly understood and readily carried into 'eflec't' we will describe the same more fully with: reference to the accompanying draw- :ing'sfin which 1 gure 1 'isa sectional end elevation showlng a constructional form of the improved firing mechanism Figs. 2-and '3 are respectively a sectional side elevation, and a sectional end eleva- "t10n showmg firmg mechanlsm.

on alarger scale the improved A is the gun cradle, A one of the trunnions, B the carriage, C the trigger or firing fhandle, and D the rotary firing Shaft. E

Copies of this patent may be obtained for represents a member interposed betweenthe trigger or firing handle and the rotary firing shaft, this" member being longitudinally hinged at e e to'the carriage. Injthe examples shown the trigger C is carried by the-handle of the elevating or "training hand wheel or lever which is ;mounted on the carriage in a position which is not eccentric with the gun trunnion. This -trigger actuates a Sliding rod C arranged DAwsoN, knight, and GEORGE THOMAS BUCK- .FHA- both subjects of the King of Great axially within the boss of the hand wheel as is well understood.

In the example shown the member E is in the form of a downwardly extending arm E and an inwardly projecting ledge E The sliding rod C rests in contact with the outer surface of the arm E and the ledge E has a curved surfacewhich as shown in 'Fig. 2 is concentric with the gun trunnions.

In contact with this curved. surface is a roller carried by an arm D on the rotary firing shaft D. The hinges e 6 may be supported in roller or ball bearings.

The rotary firing shaft D may actuate a spring plunger for engaging with a sleeve carried by the gun in a similar manner to that set forth in specification of our prior British Patent No. 16216 of1911.

What we claim and desire to secure by Letters Patent of the United States is 1. In a percussive firing mechanism for ordnance, thecombination with the manually Operatedfiring device'arranged on the gun carriage in aposition which is some distance removed from the gun trunnions,

of a rotary firing shaft, a member inter posed between said firing device and the rotaryfiring shaft and having an operating surface concentric with the gun trunnions, and means for pivotally supporting said member longitudinally with respect to the gun.

2. Ina PBI'CIISSlVfifiIlIlg mechanism for ordnance, the combination with the manufive cents each, by addressing the *GdmInissionefot Patents, Washington, D. 0." 

